I noticed the tiniest UI bug today while watching Mass Alex. When hovering over the video progress bar ahead of your current position, the image preview of that spot in the video isn't popping up (not sure if this is a bug as well or just the case for some videos?), but also the timestamp tooltip gets squished together as you approach the end of the video (and I assume the edge of the parent element).
As a developer who has a heavy focus on frontend at work, I know this is super small, but I figured I'd add to your JIRA backlog or however you track stuff anyway.
Thanks for all the hard work keeping the site up and running!